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All results from a given calculation for HSCH2SH (Methanedithiol)

using model chemistry: B1B95/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-832.988274
Energy at 298.15K 
HF Energy-832.988274
Nuclear repulsion energy141.783408
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B1B95/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 245 234 4.61 13.02 0.61 0.76
2 A 309 295 22.66 11.26 0.70 0.82
3 A 639 611 3.01 15.26 0.20 0.33
4 A 936 894 5.86 12.58 0.57 0.73
5 A 1254 1197 1.35 26.16 0.70 0.82
6 A 1520 1451 7.30 21.00 0.74 0.85
7 A 2727 2604 2.19 105.30 0.16 0.27
8 A 3115 2974 5.92 88.18 0.11 0.20
9 B 275 262 50.46 2.10 0.75 0.86
10 B 738 704 15.87 0.15 0.75 0.86
11 B 752 718 15.11 11.11 0.75 0.86
12 B 1041 994 28.58 7.60 0.75 0.86
13 B 1306 1248 11.46 4.88 0.75 0.86
14 B 2726 2603 5.13 82.48 0.75 0.86
15 B 3171 3028 0.28 65.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10376.7 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 9908.7 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B1B95/3-21G*
ABC
0.87718 0.10621 0.09917

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.787
S2 0.000 1.539 -0.182
S3 0.000 -1.539 -0.182
H4 0.880 -0.052 1.430
H5 -0.880 0.052 1.430
H6 1.105 1.253 -0.888
H7 -1.105 -1.253 -0.888

Atom - Atom Distances (Å)
  C1 S2 S3 H4 H5 H6 H7
C11.81891.81891.09061.09062.36592.3659
S21.81893.07872.42972.36291.34243.0849
S31.81893.07872.36292.42973.08491.3424
H41.09062.42972.36291.76242.66943.2793
H51.09062.36292.42971.76243.27932.6694
H62.36591.34243.08492.66943.27933.3412
H72.36593.08491.34243.27932.66943.3412

picture of Methanedithiol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 S2 H6 95.719 C1 S3 H7 95.719
S2 C1 S3 115.621 S2 C1 H4 110.746
S2 C1 H5 105.875 S3 C1 H4 105.875
S3 C1 H5 110.746 H4 C1 H5 107.798
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.771      
2 S -0.046      
3 S -0.046      
4 H 0.278      
5 H 0.278      
6 H 0.153      
7 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.398 0.398
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.736 1.915 0.000
y 1.915 -39.221 0.000
z 0.000 0.000 -32.136
Traceless
 xyz
x 3.943 1.915 0.000
y 1.915 -7.285 0.000
z 0.000 0.000 3.342
Polar
3z2-r26.684
x2-y27.485
xy1.915
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.925 0.012 0.000
y 0.012 7.364 0.000
z 0.000 0.000 5.025


<r2> (average value of r2) Å2
<r2> 114.868
(<r2>)1/2 10.718